August 1978 storm reports: hail, wind and tornadoes
IndependentNot affiliated with NOAA or the National Weather Service.
In August 1978, 113 hail, 253 damaging-wind and 65 tornado reports were logged on 31 storm days across 41 states. The largest hail reported was 2.75″ (baseball size) in Koochiching County, MN on August 17, 1978. The most hail reports came on August 1, 1978 (13). Tornadoes killed 1.
Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
← July 1978 All 1978 storm days September 1978 →
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Biggest storm days of August 1978
| Day | Hail | Wind | Tornado | Largest hail | States |
|---|---|---|---|---|---|
| Aug 25, 1978 | 9 | 27 | 3 | 2.50″ | 10 |
| Aug 14, 1978 | 8 | 23 | 7 | 1.75″ | 9 |
| Aug 1, 1978 | 13 | 19 | 3 | 1.75″ | 10 |
| Aug 15, 1978 | 7 | 15 | 12 | 1.75″ | 9 |
| Aug 18, 1978 | 5 | 19 | 1 | 2.50″ | 7 |
| Aug 17, 1978 | 13 | 7 | 2 | 2.75″ | 13 |
| Aug 26, 1978 | 4 | 16 | 1 | 1.75″ | 7 |
| Aug 19, 1978 | 4 | 11 | 3 | 1.75″ | 9 |
| Aug 28, 1978 | 1 | 11 | 6 | 1.00″ | 7 |
| Aug 16, 1978 | 8 | 6 | 3 | 2.00″ | 7 |
Largest hail reported in August 1978
| Day | Size | Location |
|---|---|---|
| Aug 17, 1978 | 2.75″ (baseball) | Koochiching County, MN |
| Aug 27, 1978 | 2.75″ (baseball) | Sheridan County, NE |
| Aug 18, 1978 | 2.50″ (tennis ball) | Crawford County, WI |
| Aug 25, 1978 | 2.50″ (tennis ball) | Sheridan County, MT |
| Aug 12, 1978 | 2.25″ (hen egg) | Cavalier County, ND |
| Aug 17, 1978 | 2.25″ (hen egg) | Cass County, ND |
| Aug 8, 1978 | 2.00″ (hen egg) | Jefferson County, AL |
| Aug 16, 1978 | 2.00″ (hen egg) | Cloud County, KS |
| Aug 16, 1978 | 2.00″ (hen egg) | Hamilton County, IA |
| Aug 17, 1978 | 2.00″ (hen egg) | Cass County, ND |
Storm reports by state, August 1978
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| North Dakota | 11 | 16 | 4 | 2.25″ |
| Nebraska | 8 | 20 | 2 | 2.75″ |
| Kansas | 9 | 18 | 0 | 2.00″ |
| Michigan | 5 | 13 | 9 | 1.75″ |
| Minnesota | 12 | 9 | 6 | 2.75″ |
| Texas | 4 | 12 | 6 | 1.75″ |
| Illinois | 3 | 15 | 3 | 1.75″ |
| Missouri | 6 | 15 | 0 | 1.75″ |
| Arizona | 1 | 15 | 0 | 1.75″ |
| Arkansas | 7 | 4 | 4 | 1.75″ |
| Louisiana | 1 | 13 | 1 | 0.75″ |
| Wisconsin | 6 | 8 | 1 | 2.50″ |
| Florida | 1 | 7 | 6 | 1.75″ |
| South Dakota | 6 | 7 | 0 | 1.75″ |
| Colorado | 2 | 8 | 2 | 1.75″ |
| Georgia | 2 | 9 | 1 | 1.75″ |
| Mississippi | 1 | 9 | 1 | 1.75″ |
| Wyoming | 4 | 5 | 1 | 1.10″ |
| Pennsylvania | 1 | 3 | 5 | 1.75″ |
| Iowa | 4 | 4 | 0 | 2.00″ |
| Indiana | 2 | 6 | 0 | 1.75″ |
| Alabama | 4 | 3 | 0 | 2.00″ |
| Montana | 2 | 3 | 2 | 2.50″ |
| Ohio | 1 | 6 | 0 | 0.75″ |
| Tennessee | 2 | 3 | 1 | 1.25″ |
| Kentucky | 1 | 3 | 1 | 1.75″ |
| Oklahoma | 1 | 3 | 0 | 1.25″ |
| Maryland | 0 | 2 | 1 | – |
| North Carolina | 1 | 0 | 2 | 1.75″ |
| Nevada | 0 | 3 | 0 | – |
| New York | 0 | 1 | 2 | – |
| Oregon | 0 | 2 | 1 | – |
| Virginia | 1 | 1 | 1 | 1.00″ |
| Idaho | 1 | 0 | 1 | 0.75″ |
| New Jersey | 1 | 1 | 0 | 1.00″ |
| New Mexico | 2 | 0 | 0 | 1.75″ |
| Utah | 0 | 2 | 0 | – |
| West Virginia | 0 | 2 | 0 | – |
| California | 0 | 1 | 0 | – |
| District of Columbia | 0 | 1 | 0 | – |
| Washington | 0 | 0 | 1 | – |
Every storm day in August 1978
Aug 1 Aug 2 Aug 3 Aug 4 Aug 5 Aug 6 Aug 7 Aug 8 Aug 9 Aug 10 Aug 11 Aug 12 Aug 13 Aug 14 Aug 15 Aug 16 Aug 17 Aug 18 Aug 19 Aug 20 Aug 21 Aug 22 Aug 23 Aug 24 Aug 25 Aug 26 Aug 27 Aug 28 Aug 29 Aug 30 Aug 31
A storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Read more about NOAA storm reports.